Babies may be developing mature cognitive and social skills as early as five months old.
A new study finds infants can follow the gaze of an adult toward an object and pay attention to it.
This skill -- called joint attention -- is necessary for learning.
By studying the brains of infants as adults worked with them, researchers at the University of London found babies engaged in joint attention used an area of the brain linked to complex cognitive and social behaviors.
They say testing children for this skill could be an early indicator of learning disabilities -- like autism.